<template>
  <div id="app">
    <div class="container">
      <!-- 顶部搜索框模块 -->
      <div class="form-group">
        <div class="input-group">
          <h4>品牌管理</h4>
        </div>
      </div>

      <!-- 数据表格 -->
      <table class="table table-bordered table-hover mt-2">
        <thead>
          <tr>
            <th>编号</th>
            <th>资产名称</th>
            <th>价格</th>
            <th>创建时间</th>
            <th>操作</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for="(obj, index) in list" :key="obj.id">
            <td>{{ obj.id }}</td>
            <td>{{ obj.name }}</td>

            <!-- 如果价格超过100，就有red这个类 -->
            <td :class="{ red: obj.price > 100 }">{{ obj.price }}</td>
            <td>{{ obj.time | formaterDate }}</td>
            <td><a href="#" @click="del(index)">删除</a></td>
          </tr>
        </tbody>
        <tfoot>
          <tr v-if="list.length == 0">
            <td colspan="5" style="text-align: center">暂无数据</td>
          </tr>
        </tfoot>
      </table>

      <!-- 添加资产 -->
      <form class="form-inline">
        <div class="form-group">
          <div class="input-group">
            <input
              type="text"
              class="form-control"
              placeholder="资产名称"
              v-model="name"
            />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <div class="form-group">
          <div class="input-group">
            <input
              type="text"
              class="form-control"
              placeholder="价格"
              v-model="price"
            />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <!-- 阻止表单提交 -->
        <button class="btn btn-primary" @click.prevent="add">添加资产</button>
      </form>
    </div>
  </div>
</template>

<script>
import "bootstrap/dist/css/bootstrap.css"; // 默认找文件夹下的index文件(但是这个不是所以需要写路径)
import moment from "moment";

export default {
  data() {
    return {
      myShow: true,
      name: "", // 名称
      price: "", // 价格
      list: JSON.parse(localStorage.getItem("a")) || [],
    };
  },
  methods: {
    add() {
      if (this.name == "" || this.price == "") {
        alert("请输入正确的价格和名字");
      } else {
        this.list.push({
          id:
            this.list.length === 0
              ? "100"
              : this.list[this.list.length - 1].id + 1,
          name: this.name,
          price: this.price,
          time: new Date(),
        });
      }
    },
    del(index) {
      this.list.splice(index, 1);
    },
  },
  filters: {
    formaterDate(val) {
      //moment()里传入时间字符串
      //format()是moment内置的(告诉moment你要把时间格式成什么标准)
      return moment(val).format("YYYY-MM-DD");
    },
  },
  watch: {
    list: {
      handler(newVal) {
        localStorage.setItem("a", JSON.stringify(newVal));
      },
    },
  },
};
</script>

<style >
.red {
  color: red;
}
</style>